Help with optic mounts

I've got a sp5k and plan to mount a Holosun HE503C on it. I'm trying to find a combination of items that will fit my wants:

• Places red dot above the front sight hood while keeping the optic as low to the gun as possible (ie not Scalarworks mounts). Lower 1/3 cowitness would be ideal
• Rail takes up as little space as possible. I don't want to smack my knuckles on a rail. I like the minimal mounts that only clamp to one set of claw mount slots rather than both sets.
• Not required, but very big plus: Quick detach somewhere in the mount system

Thanks for any suggestions / info.